SH7720 Datasheet, PDF (1131/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 31 MultiMediaCard Interface (MMCIF)
Input/output pins
CLK
CMD
DAT
CMDSTRT
(START)
OPCR
(RD_CONTI)
CMD18(READ_MULTIPLE_BLOCK)
Command
Command
response
Transfer clock
transmission halted
Command
transmission
started
Read data
Read data
(CMDOFF)
INTSTR0
(CMDI)
(CRPI)
(DTI)
(FFI)
Transfer clock
transmission resumed
CMD12(STOP_TRANSMISSION)
Command
Command
response
Read data
Block data reception ended
CSTR
(CWRE)
(BUSY)
(FIFO_FULL)
Multiblock read command execution sequence
Stop command
execution sequence
(REQ)
Figure 31.9 Example of Command Sequence for Commands with Read Data
(Multiblock Transfer)
Rev. 3.00 Jan. 18, 2008 Page 1069 of 1458
REJ09B0033-0300